Driving mechanism.



Wi G. SHELTN.

HIVNG MECHANISM.

APPucATIoH FILED APR. 1o. 191s.

WILLIAM GENTRY SHELTN, 017' NEW YORK, N. Y.

DRIVING MEcHANisM.

Specification of Letters Patent.

Patented June 18, 1918.

Application filed April 10, IMG. Serial No. 99,051.

To afl whom t may concern.:

Bo it known that I, WILLIAM GENTRY Simi/nm, n. citizen ot* the United States of America, residing in the borough of Monlinttnn, city. cfinnty.` and Stilte of New York, have inventrd certain nrw and useful 1mprovenionts in Driving lllcclninisni. of which the follmving is n specification.

The object. of the invention is to provido :i subsidiary electric motor for operating a. driven part, particularly one which is repeatedly slnrtcd and stopped :it brief inter-- vals, as for instance7 the rotary portions of a. sewing machine or talking machine, which are provided with driving mechanism for such rotary port and which part is capable of being stnrtfid anni stopped independently of its primary driving mechanism. ln start ingrv talking machines the record supporting Tinten is frequently given n. forward impulse )y hond to assist the spring in overcoming the ,inertia` of the driven parts and on the completion of the reproduction of the record the platen is stopped either by a brake or by hand. The present improvement takes advantage of these various mechanisms, as

well as of the governor for controlling the speed of rotation of the driven part, for instance. the talking machine platen. It also provides mechanism in this subsidiary motor whereby upon the starting of the driven port, the motor circuit is automatically closed, and upon the slowing down or stopping of such part, the motor circuit is opened.

The drawing accompanying and forming a part of this application is a View partly in elevation and partly in vertical Section of :i practicable embodiment of my invention as applied to a talkinl machine.

For the purpose of illustrating the invention n. talking machine mechanism hasI been selected for the drawings. The table 1 of the frame Work is shown carrying a. horizontally disposed rotary supporting platen 2 for chrrvin and rotatin the record 3, y

some suitable material such as felt 4 being interposed between the platen and the redord. Two motor drivers are illustrated, the primary driver being in the. form of a. spring motor, and the subsidiary driver being in the form of an electric motor. Both of these motors are illustrated as secured to and carriod by the table 1 of the frame. The laten is shown carried by a spindle disp sub- Stantially m s vertical position and acting as tho axis or pivot about which the platen rotates.

Tho primary motor, in the present illustration :t spring motor, acts upon the spindle and thereby rotates the pinten. The spindle shown provided with :i Worm 6 with which meshes :i worm Wheel 7. The spring is housed in n woll known manner in n borrel S supported by a shot't il. The ends of the spring are of course connected respectively to the worin wheel i' und n ratchet wheel l0 engaging an cscnpcinent dog,lr 1l pivoted to the frame work of the machine. This dog' and ratchet wheel esciipemcnt constitutes u. convenient form of clutch mechanism between the primary driver and the rotatable member, the platen in the illustration, whereby the latter muy be opera.- tively clutched to and drivcn by the former or may rien forward independently of such primary driver. The construction of the illustrated primary motor is such that when the springr is Wound, it rotates the platten 2 forwardly in the proper direction, and when the springr is u nwoond. the platen may be rotated forifardly in thin sinne directionl this beingr permitted in the present illustration by the escnpement mechanism above mentioned. In the present showing the pinten and spindle 5 aro adapted. to move together. A governor is provided for the platen and is adapted to control the speed of the same Whether the rotative force is applied to the platen through tho spindle or is applied to the spindle through the platen. A well known forni oi bell governor is shown in the present illnstmtion. This comprises a spindle 152 mountod in suitable bearings and carrying a worm Wheel 13 meshing with a. Worm wheel 14 fast on the platen spindle 5. The governor spindle has associated With it a plurality of spring members l5, each provided with a. suitable Weight or ball I6. Spring' members 15 are shown connected to a. plate 17, which,11pon the rotation of the platen 2 and the outward centrifugal movement of the balls will be drawn toward the left in tho illustration, and upon excessive rotation against a, suitable braking device. The drawing shows the parts in the position ot: rest, and the friction member 18 of the brake in engagement with the governor disk 17. The friction member 18 is shown carried by a lever 19 pivoted to. the frame work and associated with actuating mochaliin'm 20 in ilii upper sidra iii' Hw iililil, lli lliiis frirni iii' giiwriimg tiis iii-nini lviii is set iitlllr :ii tliii posiiiiiii nl' ship iii' :my prcileerniiiiieil ilvgifeii if spend iiiiii ciii'iiiiir- :ies with the giuri-niuiii assuring the iii-upm' cmilrl of tiw iilailcii wiii'ii liiiili'r llaQ` mmtive influence mi! driving iiiii-liiiiiimi,1 ii iiieiivil iliiS i5 furnishiiil liy ilw priiiizii'y iiiiiii'iig :iii example of which ling just liiiii iliswiiliiiil. nr by the subsidiary iiiiito'iliivsiliiiiiy iii liu described.

From the fnrog'uiiig (iusui-ipl iiiiik it will bie zippiren` ihul, tliiy riii'iilivu iiiiri` illiif iiliiieii in the present illustration. iiiziy IiiA1 iii-limi forward inclepvniliil ly in iti-1 priiiiiii'y iiiiiifii". particularly when tliiy spring i riiii ilim'ii. but that suc-li iiiilvpnilviit i'iiiiitiiiii is, iiigiixi tilielessi controlled liy lli@y giii'vriiiir imi iiv brake. ln ziiiilitiiiii m the piiiiiiii'jr iiiiiiifii subsidiary :iriver is iliiisti'iilml iii @iw if i of an electriiiiiulm wliicli may im iiiiii im@ (if driving releiiioii when ilii priiiiziiji iiiiiiiii is to be einpiiiycii. ziiiil vi'iiii'li iiisii mim; iii; blULglli iiil() driving lcgliliuii Vi'iiii iiiiii platen :mil iipiij.' riii'iivu i'iiicii lii-i'vi'iii iiiii properly drive tive ivciiriL iii@ iiiiiiii iii-i) partei? tu the rei il being ifiiiiii'iiilml iiiiii governed by lille gui'ea'iiiii' zihsiiiriiii wl willi ilii1 priiiiiiry driver niecliinisiri.

The electric mutui.' illusirziliil iii ilii iii'iiii ing is sliowii periiiiiliiiitly :iiini'livil iii iliil hihi(l l of the iriiiiii` work by iiiiiiiiis iil' :i mi porting briwli'iit :5 wigiiiiii iii v iiiiiii iii; ii'iciins of screws* The wrm "iiviiiiaiiiiiiiilfi connected" is ilsiil t0 iiiiiiiliilii iiiiii iliir: iiiiiiliir is huilt in willi flii iiiiiisliiiii :mail wiiisiiiiiiiw :i piii't tlivri-iil". amil ii'livii liiiili iii iiii-miiiiii :iii eliiiiient 0i' illu iifiiiiiiiiiiii fiiiiiliiiii'iii` (*iruliuistiiiiizw4 surruiiiiiliiigv liii uw iiiF miwli piiilicliliu' iIHliiliiii-iil iliJii-riiiiliil 'ii'iiii-ii iiiciA im' Viil lia illu miv wiiivii is i'iisiiiiiiiiiiii' iiiiiel :ind Wliiili will iii lii-lil :in` i rifiiliii lie i'iislmriarily viiiiiliiji'iwl iiiiitiii' iliiiiilii llii- Sfiiiie rmimii liv iiiiiii'riiliilile. Liiiiii imm-w :if ifilirse. would (iriliiiaii'ilji' uw ffiiia eiiiwiiiv i-iiiivv limriimis. liiit wliiiii luiiiiig iii 3 -li'1iiii1zii iii siicii ii. diaiiiiii-e :iwiii friiiii lw` virili-iii viiii Iiwlimis iliiil` il wiiiilil iw iiiiiiiiii'- iiliiy llii sum-vi" il' iiiiii'A y. iliif Sg if :iiiiiiir will tlieii iii iiiiliiiii'iiii. lii =iilii iii the spring mutui' 'ii'iii iii'iliiizirily iii iifivil. :mii file eiui'ciirii' iiifiiiii iiiily i-iiipliiyml xviii-ii ii 'in desired tu leip lli@ iiisri'iiiiifiif running for Some extmidull pui'iiiil, :is im' insliiiiin. iiiiiiii :i Iirwi'ii i@ living iIiiyvil iii i'iirlrieciiii willi :i repeater. Tliiiii @ilimiill'iiir iiiai)4 licL in gardeil to lic liilil i'iiiily in i'iiiiiirl iisL to the Litllciz but i'i'oiii illu i'iiil tiizii ii im present illlisirsiliriii :i iiiiiiiiivi'cizii fiiiiii :if Spring motor :iiiil in g'iii'ei'iiiiig iiieiliiiiiiqiii is illustrated. tlm hpring motor lia-s heen called a primary fliiiiir :ind ilio (il witi'ii' m0- tor a Subsidiary (iriver. Tiiv vlocii if. iiimiii' is shown iiioiiiii'f-fi iii :i i'zisii'ig or limisiiig pivotally supporiisd by the bracket wiiii la iii la) viii ilipj riiimiin filVA iiiim iiiiiiiii` iiiiiiii-lji'. liv iiiiliizi mism, 'l'liesi` ms :ia'u sliiiii'ii variving ilie miiifzii' wifrii iiiifiiilims 415. l-Ti iii itin-,nit

ria;

meer

switch member 44 is short relatively to the other member 45 which is of a resi ient nature and extends across the crown of the arch 38. The parts are so proportioned that when the arch is in its normal or idle position, namely, the position illustrated in the drawings, it holds the switch member 45 out of en agement with the switch meinber 44, there y maintaining the circuit open. Whether or not the circuit will be closed upon a speed less than the maximum motor speed is governed and predetermined by the normal space between the contact points of the members 44 and 45. This space may be so adjusted that the circuit will be closed during slome predetermined ranges of speed, or so that itlwill be only closed during the maximum motor speed.

The closing of the circuit is effected hy the outward movement of the weights fliittening the arch 38, whereupon the circuit is automatically closed. Further outward movement of the weights further llattens the arch to suoli an extent that there is no frictional engagement between tiny arch spring and the switch member 45.

The` circuit may be Closed either by rotating the driven part of the platen i2, :is for instance, by hand, or by means ol' a cir cuit closing device. There is shown a push button 4G connected with a pair of wires 47, 48 respectively connected to the switch members 44, 45. If it is desired to start the motor'by means of the push button, this will be depressed, thereby closing the circuit through the motor, immediately upon the motor attaining'- the pro er speed to throw out the weights 37 and atten the arch sufficiently, the points of the switch member 44 4,5 coming into engagement and establishing the circuit which 1s thereupon autoA matically maintained until the speed of the platen is reduced below the predetermined minimum. As is above stated this mechanism is capable of use in many situations. For convenience it is shown in connection withV a talking machine, and the following description of the operation is framed in the terms of such a machine. It is to be under stood, however, that this is not to vbe construedas alimitation to the range of `ena-- plfyment of the invention.

ertain mechanisms, particularly talking machines, are provided with automatic sto s for sto ping the driven partupon comp etion o a given task, as ,for instance, in the talking machine upon the com letion of the reproduction offthe record. n the drawing, a commerciali lformof automatic brake is illustrated comprising a friction member 50 adapted to ,be moved into engagement with the inner `face' of the'llan e 29'of the platen. An erlrlten'sion spring 1 is -provided for bringing t e friction member =into operation at a 'predetermined time.

For the operation of this automatic brake, the sound horn 52 is shown provided with an arm 453 located in position to enga ye a tripping deviee54 for the brake. he period in the cycle of platen rotation at which the arm 58 engages the member 54 for trippin and releasing the brake is capable of eing fixed at will so that the rotation of the platen will be sto pcd at a predetermined point on the record).

The operation of the illustrated mechanism is as follows: Assuming it is desired to reproduce irrecord employing a spring motor, the electric motor is moved to the dotted line position and there held by turning down the set screw 35, thus holding the driving pulle 28 out of engagement with the platen. he record disk 3 is placed in its proper position upon the platen 2, and the reproducing )arts of the phonograph properly adjusted, it being of course as 4sumed that the spring within the spring barrel 8 is under proper tension. W'lien the spring is thus under tension, this motor is thereby automatically clutched to the driver part. 'llie regulator 20 is then moved so that the friction member 1.8 is withdrawn from its engagement with the governor disk 1T. The operator then gives the platen 2 a forward impulse by hand to assist the spring of the motor in overcoming the inertia of i the driven parts., The rotation of the platen then continues under the control of the governor mechanism operated throu h the spindle 5 in the manner above descri ed. When it is desired to rotate the platen andthe record disk carried thereby by means of the electric motor, the spring motor is caused to run down, unlessit has'previously been permitted to do so. The driving portions of the electric motor are then brought into driving engagement with the platen by unscrewing the set screw and releasing the motor through the influence of its spring 30 as above stated elastically pressing the driving pulley 28 against the inside of the flange 29. The record disk in some reproducing mechanism having first been properly adjusted theoperator, as in the former case, releases the brake and gives the platen a forward impulse b hand. Forward move,- ment of driven pa independently of the run down spring automatically unc/latches' the worm wheel 7 from the s ring motor shaft 9. This rotation of the p aten' rotates the motor shaft 28, whereupon centrifugal force throws the weights 37 outwardly and iattens the arch 88 and permits `the interengagement of the switch members' 44 45 whereupon the motor circuit is compieted and the motor continues to rotate the platen until this is stopped orA its speed reduced sulliciently for the spring 88 to overcome the l the rotation of the platen by either of the with the pinten throu h the spindle is ef- 4festive, exoesivo spec( druwing the plate 17 against the friction upplying menus 1B. lu Sonie instunonn, it r .y be desirable to start the platen by means of the electric motor without the u'mnually applied forward im pulse, iu this case the motor rirruit is rios-ud by tinl push button l() and the 'irouit maintained closed until the uutoinalie switch opvrntin f niechunism boeoiuuhy effective. Upon the re earn' of the push button 46, the circuit of the motor is then under the control of the automatic switrh operathugr uwohanism.

Vi'hrn the driven lm'rhauisin is controlled with nu uuiolnutuluahe. as for instance, the hraltt` 5t) und ite assotfiatwl parts. the lopping of the driven part. ilul platen 2, by menus of thin brok(- nnnrdiatoly stalla the motor ultirll nof'oingnuuiml by tlu` inward movement of the sr-itth governor wright il? und tlv" inmrruptmn olv the motor f-iwuil.

That lvlainf iras l. Tho wnnllinulion util. u talkin@r um Chine comprising a record support, a opting; :noter for driving the nupport` a clutch mechanism between said Spring motor und the support whereby the -Said support may run forward independently of the Said s )ring motor, und a governor for controlling the forward movement of the said support` of an electric motor permanently attached to the talkingY machine, means carried thereby for engaging the said support and driving the same forward, and means operable et will for holding the elertrio motor idle or in driving relation with the record su port.

2. The combination with a tulting nurA chine comprisingr n record turntable'disposed in a substantially horizontal position, a spring motor for driving the turntable, a clutch mechanism between said spring inotor and turn-table whereby the latter may run forward independently of said spring, and e governor for controllin the forward n iovement of the said tn rrvtab e, of en inde- `pendent motor comprising 'a supporting racket Secured to the tallung machine, an electric motor and casing pivotally supported by said braeltp the sha-ft of the motor extendin upwardly, and u pulley mounted upon sai shaft extension for engaging and frctionally driving the turntable;

3. The combination with a. talking ma,- chine comprising@l record turntable disposed in a, substantially horizontal position, a, spring motor for driving the tum-table,

u l-lutch uux-hauism between said spring motor und turn-table whereby the lutter may run forward independently of Suid spring, und a governor for controlling the forward moveuuuu of the Huid support, of an indeuendunt motor couiprieinitr a su )porting racket secured to the talking mac ine, nu electric motor und casing )ivotnlly support ed by said bracket, the shai't o`f theI motor ex tondng,r upwardly, a pulley mounted upon said slmft extension for enga ing and frirtionnlly driving the tln'irtab e, und spring means acting upon thc said motor fusing for impolliug the ,inlley to ite ,-woiik.

4, The combination with a talking mar rhino rompriaing u tabl(` disposed in u .sub` dunlinlli horizontal position, a record 5upport Inooutod ahovi such table, a spring!l nio lor for routrolling the support, a clutrh nwrhaninn between ymid .spi-iopr motor and ,upport uhrreby the aid aupportV may run t'oiuunl iudvmmh-ntly oi Huid spring. and u f fovrruor for'tontrolling' tluforward Inoveiuut oi' the nifl wpport. ot' un independent motor romprising; :l upportingrV brun-hel so" rin-rd to tlu.l under side of the table, an eleclrio motor nud casing pivotully supported by Suid tiran-kot` the shaft of the .motor e):- tendiner through the tuble, and a pulley mounted upon said shaft extension for engaging and friotionally driving the record support.

The combination with u record turn-- table and n base plate, of u depending brarltet secured to the base plate, a motor mounted on the bracket, u vertical power- Shaft on the motor extending upwardly throu h the base plate, and n drive-whee1 provided on the power-'shuft and engaging the fece of the record turn-table.

(5, Thecombination, with a record turntrible having a dependin annular flange and L haee- Jlate; of a depending bracket secured to the ase-plate; u motor mounted on the bracket, a vertical ower-shaft on the motor, extending ,upward y through the base-'plate and o drive-wheel provided on the power` `shaft and engaging' the inner face of the de )ending annu te le.

In wit-ness whereof, I have hereunto si ed my naine in the presence of two subscri ing witnesses.

Guau LYON RUSSELL, Gns'mv R. THOMPSON.

ir Bange of the record turn- 

